PTBP1 is required for embryonic development before gastrulation.

Polypyrimidine-tract binding protein 1 (PTBP1) is an important cellular regulator of messenger RNAs influencing the alternative splicing profile of a cell as well as its mRNA stability, location and translation. In addition, it is diverted by some viruses to facilitate their replication. Here, we us...

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Autores principales:	Jakob Suckale, Olivia Wendling, Jimmy Masjkur, Melanie Jäger, Carla Münster, Konstantinos Anastassiadis, A Francis Stewart, Michele Solimena
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b73c8399ee634106a4897f5c153f895a
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spelling	oai:doaj.org-article:b73c8399ee634106a4897f5c153f895a2021-11-18T06:58:35ZPTBP1 is required for embryonic development before gastrulation.1932-620310.1371/journal.pone.0016992https://doaj.org/article/b73c8399ee634106a4897f5c153f895a2011-02-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21423341/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Polypyrimidine-tract binding protein 1 (PTBP1) is an important cellular regulator of messenger RNAs influencing the alternative splicing profile of a cell as well as its mRNA stability, location and translation. In addition, it is diverted by some viruses to facilitate their replication. Here, we used a novel PTBP1 knockout mouse to analyse the tissue expression pattern of PTBP1 as well as the effect of its complete removal during development. We found evidence of strong PTBP1 expression in embryonic stem cells and throughout embryonic development, especially in the developing brain and spinal cord, the olfactory and auditory systems, the heart, the liver, the kidney, the brown fat and cartilage primordia. This widespread distribution points towards a role of PTBP1 during embryonic development. Homozygous offspring, identified by PCR and immunofluorescence, were able to implant but were arrested or retarded in growth. At day 7.5 of embryonic development (E7.5) the null mutants were about 5x smaller than the control littermates and the gap in body size widened with time. At mid-gestation, all homozygous embryos were resorbed/degraded. No homozygous mice were genotyped at E12 and the age of weaning. Embryos lacking PTBP1 did not display differentiation into the 3 germ layers and cavitation of the epiblast, which are hallmarks of gastrulation. In addition, homozygous mutants displayed malformed ectoplacental cones and yolk sacs, both early supportive structure of the embryo proper. We conclude that PTBP1 is not required for the earliest isovolumetric divisions and differentiation steps of the zygote up to the formation of the blastocyst. However, further post-implantation development requires PTBP1 and stalls in homozygous null animals with a phenotype of dramatically reduced size and aberration in embryonic and extra-embryonic structures.Jakob SuckaleOlivia WendlingJimmy MasjkurMelanie JägerCarla MünsterKonstantinos AnastassiadisA Francis StewartMichele SolimenaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 2, p e16992 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jakob Suckale Olivia Wendling Jimmy Masjkur Melanie Jäger Carla Münster Konstantinos Anastassiadis A Francis Stewart Michele Solimena PTBP1 is required for embryonic development before gastrulation.
description	Polypyrimidine-tract binding protein 1 (PTBP1) is an important cellular regulator of messenger RNAs influencing the alternative splicing profile of a cell as well as its mRNA stability, location and translation. In addition, it is diverted by some viruses to facilitate their replication. Here, we used a novel PTBP1 knockout mouse to analyse the tissue expression pattern of PTBP1 as well as the effect of its complete removal during development. We found evidence of strong PTBP1 expression in embryonic stem cells and throughout embryonic development, especially in the developing brain and spinal cord, the olfactory and auditory systems, the heart, the liver, the kidney, the brown fat and cartilage primordia. This widespread distribution points towards a role of PTBP1 during embryonic development. Homozygous offspring, identified by PCR and immunofluorescence, were able to implant but were arrested or retarded in growth. At day 7.5 of embryonic development (E7.5) the null mutants were about 5x smaller than the control littermates and the gap in body size widened with time. At mid-gestation, all homozygous embryos were resorbed/degraded. No homozygous mice were genotyped at E12 and the age of weaning. Embryos lacking PTBP1 did not display differentiation into the 3 germ layers and cavitation of the epiblast, which are hallmarks of gastrulation. In addition, homozygous mutants displayed malformed ectoplacental cones and yolk sacs, both early supportive structure of the embryo proper. We conclude that PTBP1 is not required for the earliest isovolumetric divisions and differentiation steps of the zygote up to the formation of the blastocyst. However, further post-implantation development requires PTBP1 and stalls in homozygous null animals with a phenotype of dramatically reduced size and aberration in embryonic and extra-embryonic structures.
format	article
author	Jakob Suckale Olivia Wendling Jimmy Masjkur Melanie Jäger Carla Münster Konstantinos Anastassiadis A Francis Stewart Michele Solimena
author_facet	Jakob Suckale Olivia Wendling Jimmy Masjkur Melanie Jäger Carla Münster Konstantinos Anastassiadis A Francis Stewart Michele Solimena
author_sort	Jakob Suckale
title	PTBP1 is required for embryonic development before gastrulation.
title_short	PTBP1 is required for embryonic development before gastrulation.
title_full	PTBP1 is required for embryonic development before gastrulation.
title_fullStr	PTBP1 is required for embryonic development before gastrulation.
title_full_unstemmed	PTBP1 is required for embryonic development before gastrulation.
title_sort	ptbp1 is required for embryonic development before gastrulation.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/b73c8399ee634106a4897f5c153f895a
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PTBP1 is required for embryonic development before gastrulation.

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